Hex #89bdc4 or rgb(137,189,196) in RGB space is the tint of cyan. It has hue angle of 187.12 degrees, value = 77 and saturation = 30. #89bdc4 can be obtained by mixing 4 colors: 2 drops of red, 5 drops of cyan, 5 drops of white, 1 drop of black.
Nearest safe hex - #99cccc. Below you can see the block with #89bdc4 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #89bdc4 to the mixer and play with it.